“Notes of the Discovery of a Necklace of Beads and Plates of Shale and Jet, along with Flint Arrow Heads, found in a Cist under a Small Tumulus at Torrish, Kildonan, Sutherlandshire”, PSAS, vol. 8, pp. 408–411, Nov. 1871, doi: 10.9750/PSAS.008.408.411.